Better error message for using static import in repl

[MylesBorins]

We don't support using static import in the repl, we should give a more meaningful error message

[DerekNonGeneric]

Welcome to Node.js v14.3.0.
Type ".help" for more information.
> import * as ns from './foo.mjs';
import * as ns from './foo.mjs';
^^^^^^

Uncaught SyntaxError: Cannot use import statement outside a module

Linking #32935 to help keep track of this story.

[MylesBorins]

Fwiw I almost have a poc done for this